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-rw-r--r--doc/src/sgml/ref/initdb.sgml15
1 files changed, 10 insertions, 5 deletions
diff --git a/doc/src/sgml/ref/initdb.sgml b/doc/src/sgml/ref/initdb.sgml
index b8207438910..0c32114cf70 100644
--- a/doc/src/sgml/ref/initdb.sgml
+++ b/doc/src/sgml/ref/initdb.sgml
@@ -265,8 +265,14 @@ PostgreSQL documentation
<term><option>--data-checksums</option></term>
<listitem>
<para>
- Use checksums on data pages to help detect corruption by the
- I/O system that would otherwise be silent. Enabling checksums
+ Use checksums on data pages to help detect corruption by the I/O
+ system that would otherwise be silent. This is enabled by default;
+ use <xref linkend="app-initdb-no-data-checksums"/> to disable
+ checksums.
+ </para>
+
+ <para>
+ Enabling checksums
might incur a small performance penalty. If set, checksums
are calculated for all objects, in all databases. All checksum
failures will be reported in the
@@ -343,12 +349,11 @@ PostgreSQL documentation
</listitem>
</varlistentry>
- <varlistentry id="app-initdb-no-data-checksums" xreflabel="no data checksums">
+ <varlistentry id="app-initdb-no-data-checksums">
<term><option>--no-data-checksums</option></term>
<listitem>
<para>
- Do not enable data checksums. This can be used to override a
- <option>--data-checksums</option> option.
+ Do not enable data checksums.
</para>
</listitem>
</varlistentry>